Discussion: New backend

[mateoclarke]

Creating this issue as a placeholder for discussion around replaced Airtable API as our backend.

Right now, we use Airtable's API to pull in data about projects. We did this for the prototype because it was easiest for the main content editor @danielhonker to use. We have already hit limitations with Airtable (see #75). And we know that as we add more content editors, we need a better experience.

We would also like to think ahead to a feature where a user (non-admin) could subscribe to a Project and get notifications. This feature may require user accounts.

Right now, this is low priority as we continue user testing with the data we currently have. But as we try to prevent data from going stale, this will become more important.